TODAY'S HISTORY OF THE DAY
· #223

History: April 22 (#2)

Everyday LifeTechnology History
History: April 22 (#2)
Wikimedia Commons, CC BY-SA

April 22, 1977

Optical fiber is first used to carry live telephone traffic.

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Commentary

Source: Wikipedia (CC BY-SA)
On April 22, in the year 1977: Optical fiber is first used to carry live telephone traffic. An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other.

Commentary

Source: Internal
Why April 22, 1977 matters: Optical fiber is first used to carry live telephone traffic. What began on this day left a lasting mark on history. The effects were felt immediately and continued to shape events, ideas, and lives long afterwards.

Commentary

Source: Internal
Historical context: April 22, 1977 The 20th century brought rapid advances in health, communication, science, and technology that reshaped everyday human experience. The event on this day: Optical fiber is first used to carry live telephone traffic. Source: https://en.wikipedia.org/wiki/Optical_fiber (Wikipedia, CC BY-SA)